Filament Woven Geotextile

Product Definition

Filament woven geotextile is a high-strength geosynthetic manufactured from continuous polyester or polypropylene      filaments woven into a stable fabric, designed to provide reinforcement, separation, and load distribution      in civil and geotechnical engineering applications.

Technical Parameters and Specifications

Common engineering parameters for filament woven geotextile are as follows:

• Raw material: Polyester (PET) or Polypropylene (PP)

• Mass per unit area: 120 – 800 g/m²

• Tensile strength (MD/XMD): 50 – 400 kN/m

• Elongation at break: ≤ 15%

• CBR puncture resistance: ≥ 6 – 20 kN

• Equivalent opening size (O95): 0.05 – 0.40 mm

• Permeability coefficient: ≥ 10⁻³ m/s

• UV resistance: ≥ 70% retained strength after 500 hours

• Design service life: ≥ 50 years (buried condition)

Structure and Material Composition

The performance of filament woven geotextile depends on its engineered textile structure:

• Continuous Filament Yarns: Provide high tensile strength and low creep

• Warp Direction (MD): Primary load-bearing axis

• Weft Direction (XMD): Lateral stability and load distribution

• Woven Interlacing: Controlled pore structure for filtration

• Thermal or Chemical Stabilizers: Enhance durability and UV resistance

Manufacturing Process

Filament woven geotextile is produced using industrial textile manufacturing lines:

1. Polymer melting and filament extrusion

2. Filament drawing and orientation

3. Yarn winding and quality inspection

4. Warp and weft preparation

5. High-speed weaving on shuttle or rapier looms

6. Heat setting and dimensional stabilization

7. Surface inspection and mechanical testing

8. Roll cutting, labeling, and packaging

Industry Comparison

Application Scenarios

Filament woven geotextile is widely specified by EPC contractors and engineers for:

• Road and highway base reinforcement

• Railway subgrade stabilization

• Embankment and slope reinforcement

• Port, quay, and coastal engineering

• Retaining walls and mechanically stabilized earth

• Airport pavement structures

Core Pain Points and Solutions

• Pain Point: Subgrade deformation under heavy load
           Solution: High tensile strength filament woven geotextile reinforcement

• Pain Point: Soil mixing between layers
           Solution: Stable woven structure ensuring separation

• Pain Point: Long-term creep failure
           Solution: Continuous filament yarns with low creep characteristics

• Pain Point: Construction damage during installation
           Solution: High puncture and tear resistance

Risk Warnings and Mitigation

Key risks associated with filament woven geotextile use include:

• Improper orientation: always align MD with primary load direction

• Insufficient overlap: maintain ≥ 300 mm overlaps or as designed

• UV exposure during storage: cover rolls before installation

• Incorrect pore size selection: match soil gradation requirements

Procurement and Selection Guide

1. Define project loading and design life

2. Select required tensile strength and elongation

3. Match filtration criteria to soil properties

4. Confirm compliance with project specifications

5. Review third-party laboratory test reports

6. Evaluate supplier manufacturing capacity

7. Assess logistics, roll size, and packaging

Engineering Case Study

In a highway widening project, filament woven geotextile with tensile strength of 200 kN/m was installed      between weak subgrade and crushed stone base. Plate load tests showed bearing capacity improvement of over      40%, and post-construction settlement remained within design limits after five years of service.

FAQ

• What is the main function? Reinforcement and separation.

• Is it suitable for soft soil? Yes, with proper design.

• How long is the service life? Over 50 years when buried.

• Can it be used underwater? Yes, with appropriate material selection.

• What is MD direction? Machine direction with higher tensile strength.

• Does it allow drainage? Limited but controlled permeability.

• Is it resistant to chemicals? Yes, to most soil chemicals.

• Can it replace geogrids? In some reinforcement applications.

• What roll sizes are available? Customized based on project needs.

• Does it require skilled installation? Standard geotextile installation practices apply.

Call to Action

To request pricing, technical datasheets, design support, or engineering samples of filament woven geotextile,      please submit your project specifications for professional evaluation.

E-E-A-T Author Statement

This article is prepared by geotechnical engineers and materials specialists with over 20 years of experience      in geosynthetics design, testing, and large-scale infrastructure projects worldwide.